opium

the dried, condensed juice of a poppy, Papaver somniferum, that has a narcotic, soporific, analgesic, and astringent effect and contains morphine, codeine, papaverine, and other alkaloids used in medicine in their isolated or derived forms: a narcotic substance, poisonous in large doses.

2.

anything that causes dullness or inaction or that soothes the mind or emotions.

opium o·pi·um (ō'pē-əm)n. A bitter, yellowish-brown, strongly addictive narcotic drug prepared from the dried juice of unripe pods of the opium poppy and containing alkaloids such as morphine, codeine, and papaverine. Also called meconium.